Padlock



Patented Jan. ll, 119241.

narrate stares earaaroeeice.

FRANK ELLISON BEST, OF SEATTLE, WASHINGTON, ASSIGNOR TO FRANK E. BEST, INC.,

' OF SEATTLE, WASHINGTON, A CORPORATION OF WASHINGTON.

PADLOCK'.

Application .filed February 14, 1922. Serial No. 536,429.

To a whom it may concern.

Be it known that I, FRANK E. BEST, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, and useful Improvements in Padlocks, of which the following is a specification.

This invention relates to padlocks.

The object of my invention is the improvements in looks of this character to afford a more efficient and reliable padlock than hitherto and one in which the locking mechanism may be regulated to change the combination thereof.

Other objects and advantages of the invention will appear in the following specification.

The invention is illustrated in its preferred construction and organization in the accompanying drawings, in which,

Figure 1 is a View, partly in side eleva tion and partly in longitudinal section, of my improved padlock, the core being shown partly broken away. Figs. 2, 3 and 4 are sectional views taken substantially through 2 2, 3-3, and 44 of Fig. 1. Fig. 5 is a perspective view of the lock core shown detached. Fig. 6 is a similar view of the lock tumbler.

The present lock comprises a casing mem ber 10 a shackle member 11, a spring-engaging tumbler 12, and a core member 13 containing key regulated locking mecha nism for disengaging said tumbler from the shackle member.

The casing member 10, in transverse section is, by preference, of substantially the configuration in which itis represented in Figs. 2, 3 and 4 and is provided in one of its ends with circular apertures 14 and 14 to receive the legs 11 and 11 of the shackle member 11.

The casing 10 is furthermore provided with'a bore 15 disposed in axial alignment with the aperture 14 but of greater diameter than the latter to provlde an annular shoulder 16 at one end of the bore. The shackle leg 11 is arranged to fit the casing aperture 14 therefor, said leg having an extension 11 of relatively small diameter within the bore. I

Surrounding said extension is a helical compression spring acting against a collar 18 rigid with said shackle and engageable have invented certain new against the shoulder 16 to limit the outwardspring pressed movementof the shackle.

In its end opposite to the shackle, the easing is provided with a recess 19 of a substantially elliptical shape to receive a face plate 17 which constitutes a part, see Fig.

5, of a core having a twin barrel portion,

denoted by 2020?, of figure 8 shape which is housed within a correspondingly shaped chamber 21 provided in the casing 10. 22 represents a plate serving as a partition between the chamber 21 and a chamber 23 which communicates with the aperture 14.

The chamber 23, see Fig. 2 is provided with parallel side walls 24 which afiord a guideway for a tumbler 12, shown detached in Fig. 6, said tumbler having a latch end 26 which is engageable with a notch 27 of the shackle leg 11 Said tumbler is bifurcated to accommodate a spring 28 acting between a stop and the end of the slot between the bifurcations 29 of the tumbler.

Said tumbler is provided at the end of one of its bifurcations 29 with a depending lug element 30 which is engageable by the stud or throw 31 which protrudes from the key plug 32 whereby the tumbler'may be retracted in opposition to the spring 28 to withdraw said tumbler from its engage ment with the shackle.

The key plug 32 constitutes the rotary member of the lock mechanism proper, the same being substantially similar in construction and manner of operation to the lock mechanism illustrated and described in United States Patent- No. 1,384.02). issued to me July 5, 1921.

To faciiitate the manufacture of the core and for the purpose of economizing space, the mechanism above referred to in its application to a padlock is desirably con tained within the twin-barrel member 20 of said core.

The barrel 20 is constituted of a sleeve 34 containing aforesaid key plug 32, as will be understood from an inspection of Fig. 4.

The barrel 20, which is integral with the face plate 17, is provided with an arcuate cavity 35 into which the gate element 34 of said sleeve is received after said gate is retracted from the recess 36 provided therefor in the core housing or casing 10 of the padlock. The gate element 34 is arranged ing lines, so

to protrude from the lock core at the location of the trough-like intersection of the two barrels 20 and 20 thereby allowing the recess 36 to be formed in a very easy, simple and inexpensive manner in the crest portion, which is the area of maximum thickness, in the wall of the housing 10.

The key plug like that described in said patent, is rotated by means of=a key, or keys, subject to the functions of the pin tumblers, as 37 for example. These pin tumblers prevent the key plug and the gate being turned until regulated by a key, as K, having suitably disposed notches adapted to position the pin tumblers with regard to the shearcalled, of either the key plug or the sleeve which carries the gate. The gate, it is to be understood, is disengaged only When the core is to be removed from the casing.

The sleeve 34 and the key plug 32 therein are connected for rotary movements to the face plate by the provision in the latter of a circular recess 38 to accommodate a peripheral flange 32 of the key plug, and the sleeve is connected at its outer end to the core frame or barrel 20, which is rigid with said plate, by means of an attachment 39 secured to the core frame and having a rib 40 which engages in an arcuate groove 41 provided in the gate 34 concentric with the axis of its rotation.

My improved padlock with regard to its construction and operation will, it is thought, be understood from the foregoing description.

What I claim, is,

1. In a lock, a lock core embodying twin mamm l barrel members of substantially figure cross sectional shape, a lock housing shaped toreceive said lock core and lock means operative at the point of intersection of said.

twin barrel members for locking said lock core in said lock housing.

2. In a lock, a lock core of substantially figure 8 cross sectional shape, a locking gate operative in thetrough portion along the side of said lock core, a lock housing lock core for controlling the movement of.

said locking gate.

d. In a look a lock housing having two parallel bores that intersect each other in a manner to form a chamber of substantially the cross sectional shape of a, figure 35, said chamber having a recess located at the intersection of said two'bores, a core, embodying twin barrel members of substantially figure 8 cross sectional shape arranged to fit into said chamber, a'locking gate at the point of intersection of the two barrels of said core and arranged to enter the recess in said housing to lock said core in said housing and key operated meansin said core for moving said locking gate.

FRANK ELLISON BEST.

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